./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 06:19:15,049 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 06:19:15,106 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 06:19:15,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 06:19:15,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 06:19:15,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 06:19:15,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 06:19:15,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 06:19:15,132 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 06:19:15,132 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 06:19:15,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 06:19:15,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 06:19:15,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 06:19:15,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 06:19:15,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 06:19:15,134 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:19:15,135 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 06:19:15,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 06:19:15,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 06:19:15,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 06:19:15,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 06:19:15,136 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 06:19:15,136 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 [2025-03-17 06:19:15,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 06:19:15,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 06:19:15,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 06:19:15,399 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 06:19:15,399 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 06:19:15,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-03-17 06:19:16,570 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e332aa3ce/7ba1112f56af46f4bdf68e857b4e1f11/FLAG07c586e53 [2025-03-17 06:19:16,890 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 06:19:16,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i [2025-03-17 06:19:16,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e332aa3ce/7ba1112f56af46f4bdf68e857b4e1f11/FLAG07c586e53 [2025-03-17 06:19:17,153 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e332aa3ce/7ba1112f56af46f4bdf68e857b4e1f11 [2025-03-17 06:19:17,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 06:19:17,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 06:19:17,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 06:19:17,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 06:19:17,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 06:19:17,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,162 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5e5189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17, skipping insertion in model container [2025-03-17 06:19:17,162 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 06:19:17,514 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2025-03-17 06:19:17,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:19:17,533 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 06:19:17,571 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/singleton_with-uninit-problems.i[55568,55581] [2025-03-17 06:19:17,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 06:19:17,621 INFO L204 MainTranslator]: Completed translation [2025-03-17 06:19:17,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17 WrapperNode [2025-03-17 06:19:17,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 06:19:17,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 06:19:17,622 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 06:19:17,622 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 06:19:17,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,654 INFO L138 Inliner]: procedures = 323, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2025-03-17 06:19:17,655 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 06:19:17,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 06:19:17,656 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 06:19:17,656 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 06:19:17,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,663 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,673 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-17 06:19:17,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,683 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 06:19:17,687 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 06:19:17,688 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 06:19:17,688 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 06:19:17,688 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (1/1) ... [2025-03-17 06:19:17,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 06:19:17,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 06:19:17,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 06:19:17,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2025-03-17 06:19:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 06:19:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 06:19:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 06:19:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 06:19:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 06:19:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 06:19:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 06:19:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 06:19:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 06:19:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 06:19:17,739 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 06:19:17,866 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 06:19:17,867 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 06:19:17,992 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 06:19:17,992 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 06:19:18,065 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 06:19:18,066 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 06:19:18,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:19:18 BoogieIcfgContainer [2025-03-17 06:19:18,066 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 06:19:18,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 06:19:18,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 06:19:18,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 06:19:18,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 06:19:17" (1/3) ... [2025-03-17 06:19:18,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e3106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:19:18, skipping insertion in model container [2025-03-17 06:19:18,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 06:19:17" (2/3) ... [2025-03-17 06:19:18,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295e3106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 06:19:18, skipping insertion in model container [2025-03-17 06:19:18,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:19:18" (3/3) ... [2025-03-17 06:19:18,073 INFO L128 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2025-03-17 06:19:18,084 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 06:19:18,085 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG singleton_with-uninit-problems.i that has 5 procedures, 39 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-17 06:19:18,085 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 06:19:18,175 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2025-03-17 06:19:18,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 74 transitions, 245 flow [2025-03-17 06:19:18,253 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2025-03-17 06:19:18,255 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 06:19:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 46 events. 6/46 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2025-03-17 06:19:18,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 74 transitions, 245 flow [2025-03-17 06:19:18,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 43 transitions, 137 flow [2025-03-17 06:19:18,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 06:19:18,276 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16b9202c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 06:19:18,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-03-17 06:19:18,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 06:19:18,289 INFO L124 PetriNetUnfolderBase]: 5/42 cut-off events. [2025-03-17 06:19:18,289 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 06:19:18,289 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:19:18,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:19:18,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-03-17 06:19:18,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:19:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1901373125, now seen corresponding path program 1 times [2025-03-17 06:19:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:19:18,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330102153] [2025-03-17 06:19:18,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:19:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:19:18,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 06:19:18,425 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 06:19:18,426 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:19:18,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:19:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:19:18,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:19:18,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330102153] [2025-03-17 06:19:18,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330102153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:19:18,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:19:18,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:19:18,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444987984] [2025-03-17 06:19:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:19:18,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:19:18,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:19:18,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:19:18,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:19:18,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 76 [2025-03-17 06:19:18,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:19:18,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:19:18,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 76 [2025-03-17 06:19:18,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:19:19,327 INFO L124 PetriNetUnfolderBase]: 2352/3341 cut-off events. [2025-03-17 06:19:19,328 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2025-03-17 06:19:19,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 3341 events. 2352/3341 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15279 event pairs, 1026 based on Foata normal form. 1/3178 useless extension candidates. Maximal degree in co-relation 7146. Up to 2111 conditions per place. [2025-03-17 06:19:19,358 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 53 selfloop transitions, 4 changer transitions 5/67 dead transitions. [2025-03-17 06:19:19,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 342 flow [2025-03-17 06:19:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:19:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:19:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-03-17 06:19:19,370 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40460526315789475 [2025-03-17 06:19:19,371 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 137 flow. Second operand 4 states and 123 transitions. [2025-03-17 06:19:19,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 342 flow [2025-03-17 06:19:19,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 12 redundant places. [2025-03-17 06:19:19,388 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 131 flow [2025-03-17 06:19:19,390 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2025-03-17 06:19:19,393 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2025-03-17 06:19:19,395 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 131 flow [2025-03-17 06:19:19,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:19:19,395 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 06:19:19,395 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 06:19:19,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 06:19:19,396 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2025-03-17 06:19:19,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 06:19:19,396 INFO L85 PathProgramCache]: Analyzing trace with hash 787926280, now seen corresponding path program 1 times [2025-03-17 06:19:19,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 06:19:19,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249878490] [2025-03-17 06:19:19,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 06:19:19,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 06:19:19,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 06:19:19,423 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 06:19:19,423 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 06:19:19,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 06:19:19,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 06:19:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 06:19:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249878490] [2025-03-17 06:19:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249878490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 06:19:19,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 06:19:19,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 06:19:19,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766613653] [2025-03-17 06:19:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 06:19:19,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 06:19:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 06:19:19,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 06:19:19,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 06:19:19,641 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 76 [2025-03-17 06:19:19,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:19:19,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 06:19:19,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 76 [2025-03-17 06:19:19,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 06:19:19,921 INFO L124 PetriNetUnfolderBase]: 2352/3336 cut-off events. [2025-03-17 06:19:19,921 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2025-03-17 06:19:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7959 conditions, 3336 events. 2352/3336 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15090 event pairs, 737 based on Foata normal form. 1/3181 useless extension candidates. Maximal degree in co-relation 7954. Up to 2056 conditions per place. [2025-03-17 06:19:19,926 INFO L140 encePairwiseOnDemand]: 70/76 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2025-03-17 06:19:19,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 70 transitions, 330 flow [2025-03-17 06:19:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 06:19:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 06:19:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2025-03-17 06:19:19,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2025-03-17 06:19:19,931 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 131 flow. Second operand 4 states and 124 transitions. [2025-03-17 06:19:19,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 70 transitions, 330 flow [2025-03-17 06:19:19,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 70 transitions, 325 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 06:19:19,932 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-03-17 06:19:19,932 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-03-17 06:19:19,933 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2025-03-17 06:19:19,933 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-03-17 06:19:19,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 06:19:19,936 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2025-03-17 06:19:19,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2025-03-17 06:19:19,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2025-03-17 06:19:19,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2025-03-17 06:19:19,937 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2025-03-17 06:19:19,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2025-03-17 06:19:19,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2025-03-17 06:19:19,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork2Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2025-03-17 06:19:19,938 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork2Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2025-03-17 06:19:19,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork2Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2025-03-17 06:19:19,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork2Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2025-03-17 06:19:19,939 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork2Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2025-03-17 06:19:19,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 06:19:19,939 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 06:19:19,943 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 06:19:19,943 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 06:19:19,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 06:19:19 BasicIcfg [2025-03-17 06:19:19,948 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 06:19:19,948 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 06:19:19,948 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 06:19:19,949 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 06:19:19,949 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 06:19:18" (3/4) ... [2025-03-17 06:19:19,951 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 06:19:19,952 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread0 [2025-03-17 06:19:19,953 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 06:19:19,953 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 06:19:19,953 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-17 06:19:19,955 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-03-17 06:19:19,955 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-03-17 06:19:19,955 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-17 06:19:19,956 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 06:19:20,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 06:19:20,009 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 06:19:20,010 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 06:19:20,010 INFO L158 Benchmark]: Toolchain (without parser) took 2853.78ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 110.9MB in the beginning and 129.7MB in the end (delta: -18.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2025-03-17 06:19:20,011 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:19:20,011 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.23ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 78.4MB in the end (delta: 32.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 06:19:20,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 142.6MB. Free memory was 78.4MB in the beginning and 76.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:19:20,013 INFO L158 Benchmark]: Boogie Preprocessor took 31.46ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:19:20,014 INFO L158 Benchmark]: IcfgBuilder took 378.87ms. Allocated memory is still 142.6MB. Free memory was 74.6MB in the beginning and 52.8MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 06:19:20,014 INFO L158 Benchmark]: TraceAbstraction took 1879.82ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 52.3MB in the beginning and 134.8MB in the end (delta: -82.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 06:19:20,014 INFO L158 Benchmark]: Witness Printer took 61.34ms. Allocated memory is still 201.3MB. Free memory was 134.8MB in the beginning and 129.7MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 06:19:20,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 123.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.23ms. Allocated memory is still 142.6MB. Free memory was 110.4MB in the beginning and 78.4MB in the end (delta: 32.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 142.6MB. Free memory was 78.4MB in the beginning and 76.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.46ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 74.6MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 378.87ms. Allocated memory is still 142.6MB. Free memory was 74.6MB in the beginning and 52.8MB in the end (delta: 21.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1879.82ms. Allocated memory was 142.6MB in the beginning and 201.3MB in the end (delta: 58.7MB). Free memory was 52.3MB in the beginning and 134.8MB in the end (delta: -82.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.34ms. Allocated memory is still 201.3MB. Free memory was 134.8MB in the beginning and 129.7MB in the end (delta: 5.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1123]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 87 locations, 109 edges, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 295 IncrementalHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 2 mSDtfsCounter, 295 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 06:19:20,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE